Delaware Subpoena, Civil — Statute (Out-of-State). Title 10 Del. C. 4311. Is a statute that regulates the service of process for civil cases in Delaware when the defendant is located outside the state. This statute provides that out-of-state parties may be served with a Subpoena Ducks Cecum, which requires the recipient to produce documents or tangible items for use in the proceedings, or a Subpoena Ad Testificandum, which requires the recipient to appear and testify in court. There are two types of Delaware Subpoena, Civil — Statute (Out-of-State). Title 10 Del. C. 4311.: Subpoena Ducks Cecum and Subpoena Ad Testificandum. Subpoena Ducks Cecum requires the recipient to produce documents or tangible items for use in the proceedings. This type of subpoena must be served on the person or entity with a copy of the complaint and a notice of the time and place of the deposition, hearing, or trial. Subpoena Ad Testificandum requires the recipient to appear and testify in court. This type of subpoena must be served on the person or entity with a copy of the complaint, a notice of the time and place of the deposition, hearing, or trial, and a notice of the witness's right to receive an appearance fee.